Spike fob threshing-machines



A. B. COLTON.

Thrashing-Machine Attachment.

No. 30,563. Patented, Nov. 6, 1860.

WQ l/ Mal Witnesses: Inventor:

- N. PETERS. Phmoumn vhu, Washinglon. D. c.

UNITED STATES PATENT OFFICE.

ALBERT B. OO LTON, OF ATHENS, GEORGIA.

SPIKE FOR THRESHING-MACHINES.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, A. B. COLTON, of Athens, in the county of Clark and State of Georgia, have invented a new and Improved Spike for Threshing-Machines; andI do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which Figure 1, is a perspective view of the improved spike. Fig. 2, is a segment of one of the rings, to which the spikes of Fig. l, are attached. Fig. 3, is a vertical cross section through Fig. 2.

Similar letters of reference indicate corresponding parts, in the three figures.

This invention is an improved spike to be attached to rings, that are placed closely together on a shaft to make up the threshing cylinder, the spikes project from the circumference of the rings and are so formed that they may be removed and reversed, so as to alternately present four perfect threshing edges, when one has become dull.

The nature of my invention consists in the employment of reversible spikes having a hole through their center, in combination with flanged plates or rings, having diagonally set rollers, and the longitudinal screw rods, substantially in the manner and for the purposes hereinafter described.

To enable those skilled in the art to make and use my invention, I will proceed to clescribe its construction and operation.

The spike A, Figs. 1, 2, and 3, is a strip of iron or steel cut the required length and tapered on each edge from the middle of the strip to its ends. The spike has a hole 8, punched through the middle of it, through which passes a rod B, that attaches the spike securely to the ring C, as shown in Figs. 2 and 3.

The ring C, consists of a circular flanged rim a, spokes b, and hub c, With a concentric annular flange d, on one side of the ring. On the outside of the ring, on each spoke, is cast lugs g, g, and a shoulder 72,, and a hole is made through the spokes to receive the rods B. The spike is locked to the ring 30,563, dated November 6, 1860.

so that about one third of its length will project from the circumference of the ring by setting it between the lugs g, g, against the shoulder h, and into a space in the run a, as represented in Figs. 2 and 3, so that the spike will have an end and side bearing in the ring C. It is thus secured in place by the bolt B.

Each spike secured in the same my, the rings being previously placed on their shaft, then the bolts B, will pass from one ring to another and connect all the rings closely together, forming a cylinder with spikes projecting radially from its axis over its entire surface.

The spikes may all be removed from the rings by withdrawing the bolts B, and as the edges, and ends of each spike are alike they may be reversed end for end and edge for edge, without removing the rings from their shaft.

At each end of the cylinder thus constructed of rings C, a flanged head is used and the bolts B, pass through from end to end of the cylinder and are locked against the heads, the rings are in this manner confined together and prevented from turning, and the spikes are at the same time secured to the rings.

This improved spike can be more securely attached to the ylinder, or to the concave, and when attached it will be much stronger than the ordinary spikes, while the expense of the new spikes will be no more than those that are attached by screws and nuts.

I do not claim anything exhibited in the patent granted to Snead & Carpenter May 9th. 1835, but

hat I do claim as my invention and desire to secure by Letters Patent, is

The combination of reversible spike A, A, s, flanged and shouldered plates or rings 0, a, g, h, (Z, and screw bolts B, substantially in the manner and for the purposes described.

ALBERT B. COLTON.

itnesses T. M. LAMPKIN, T. V. IVALKER. 

